The FBI is investigating yet another attack on a university researcher involved in animal experimentation.

A car was burned on Saturday outside the home of the researcher, an associate professor of behavioral neuroscience at the University of California at Los Angeles, an FBI spokesman said. No one was physically injured in the attack, the spokesman said.

A group called the Animal Liberation Front posted a message on its Web site from an entity calling itself the Animal Liberation Brigade claiming responsibility for the arson attack. The statement said the professor “addicts monkeys to methamphetamines and other street drugs” and promised future attacks that cause “a lot more damage than to your property” if the experimentation continues.